Title :
Performance of adaptive filter used in CDMA system for multiple access interference suppressing
Author :
Marouane, H. ; Benabdennabi, A. ; Kachouri, A. ; Kamoun, L.
Author_Institution :
Lab. of Electron. & Inf. Technol., National Eng. Sch. of Sfax
Abstract :
In a code division multiple access (CDMA) system all users share the same frequency band and they are separated from each other by (quasi)-orthogonal spreading codes. However, on dispersive broadband channels the orthogonality among codes is disrupted and multi-user access interference (MAI) is present on the received signal. Moreover, interference among symbols and chips of the same user arises. One of the most common solutions to suppress the MAI is the use of adaptive filter. A single-user receiver based on a linear filter that minimizes the mean square error between the output and the transmitted symbols of the user of interest. This paper focuses on the performance of the adaptive filter
Keywords :
adaptive filters; code division multiple access; interference suppression; radio receivers; wireless channels; CDMA system; adaptive filter; code division multiple access; dispersive broadband channels; linear filter; mean square error; multiple access interference suppression; multiuser access interference; quasi-orthogonal spreading codes; single-user receiver; Adaptive filters; Digital filters; Finite impulse response filter; Frequency conversion; Interference suppression; Least squares approximation; Multiaccess communication; Multiple access interference; Nonlinear filters; Statistics;
Conference_Titel :
Design and Test of Integrated Systems in Nanoscale Technology, 2006. DTIS 2006. International Conference on
Conference_Location :
Tunis
Print_ISBN :
0-7803-9726-6
DOI :
10.1109/DTIS.2006.1708659
